Trap



UNITED STATES HENRYW. JUs'rUs, or NAPANocir, NnwYonK.

V TRAP.

.i Specification of Letters Ilatent. Patented Oct. 12, 1920.`

vApplication filed October 7,1919. Serial No. 329,102.

To'aZZ whom t may concer/n. 1

Be it known that I, HENRY W. JUST-Us, a citizen of the United States, and a resident of Napanoch, in the county of Ulster and State of New York, have invented a new and Improved Trap, of whichA the following is a full, clear, and exact description.

This invention relates to improvements in traps, and more particularly to atrap for the water of condensation in any .steam sys,- tem, an object of the invention being to provide improved means for automatically discharging the waterV when it reaches a predetermined level, the operation being controlled by means of a diaphragm and the pressure of the water thereupon causing the opening of the valve `in the main outlet and allows the water to be forced therethrough by the steam pressure and then automatically closes. the said valve when the level of water falls to a predetermined point. A further Aobject is to provide a deviceof the character stated, which will be extremely simple in construction, which will be en tirely vautomatic inV its K operation, and which will most efficiently perform the functions for which it is intended.

With these and other objects in view the invention consists in certain novel features of construction, and combinations and arrangements of parts, as will be more fully hereinafter described and pointedout in the claims. y y

In the accompanying drawings- Figure lis a view in vertical section illus trating my improvements;

Fig. 2 is an enlarged view in section on the line 2-2 of Fig. 1"; and

Fig. 3 is aview in sectionv on the line 3-3 ofFig.2. 1

V1 represents a tank having an inlet 2 through which the water of condensation from the system flows into the tank. '3 represents a main outlet ,which constitutes `a vertical pipe extending into the tank. and having its open inlet end' located ata point slightly above the bottom of the tank. A

' diaphragm casing 4 is supported'on the pipe 3l by means of arbrace 5 andl a diaphragm 6 in the casing 4 hasfa disk 7 securedthereto anda rod 8 secured to the disk and extends i 'through stuffing boxes '9 and 10 on the casing 4 and pipe 3 respectively.

A valve 1.1 is secured to the lower end of the rod Sand isadapted to engage a valve seat 1,2 in the'pipe 3 to control thepassage phra'gm 6 to overcome the v13 and open therethrough. A coiledspring 13 is positioned around the rod 8 above the stuffing box 9 and exerts presure on a collar 14 `fixed tothe rod 8 and operates to normally holdh the valve in the closed position. K Y p The ypipe 3 is supported ,'n tank 1 by means of a cover'plate 15 whichV is secured over an opening 16 by means of bolts 17 and nuts 18 so asto permit ready access to `the, tankV as occasion may require.

19 represents. a cylindrical `valve casing which is securedin the vlower portion of tank 1 and communicates with a .pipe 20, the latter at itsupper end communicating with the upper portion of diaphragm c asing 4. This valve vcasing 19 is internally screw threaded, as shown at 21, vand a screw threaded valve plug 22 engages the threads 21 and is provided withv a needle valve 23 adapted to engage thereduced end 24 4of the valve casing and fully close the outlet.

' The4 valve casing 19 has a screened inlet 25 through which the water from the 'tankv passes in its passage into the pipe 20. The

valve plug 22 is provided jat its inner end with a head 26 having a pair of radially l positionedV pins 27 thereon whichare adapted to be engaged by an arm 28. This arm 28 is pivotallyconnected to the casing 19, as

shown at 29, and its free en dj carries va float 30.y p A ipe` 31 connects thelower `portion of vcasing 4`with'the horizontal. discharge end 32 of outlet pipe 3 and a check valve 33 is provided in this pipe 31. A drain pipe 34 connectsfpipe 20 with pipe 31` and a needle Y valve 35 is located in pipe 34.`

y Fig.l 1 killustrates the normal parts. As the water of condensation from i inlet 2 accumulates in the bottom of tank 1,

it will cause the float 30 to lift. This lifting action some timeibecauseof the factV Vthat there is a certainspace between the pins 27, butas `soon as the arm `28pengageslthe upper pin 27 it willcausethe valve plug 22 to turn and in ldoing 'so .will open the valve 23.

` When this valve is sufficiently opened, the

steam pressure in tank 1 will force'the water through Vthe .screened inlet# 25 and up the pipe 20 `into the upperportion of diaphragm 4 exertinga pressure on the diaressureof spring valve `11. l he water in the forced out through the pipe 3 casing tank is then until the Y level position of.

does not affect the valve 23 for in the' tank.. fans4 te aA peint one inchl'above the bottom of pipe 3 and.v

during this discharge of the water Athe loat 30 will descend andY gradually close theV valve 23 tight.v Y.

The valve 35, having a permanent leak,

Lsoon jrelievespipe and diaphragm 4 ofall pressure and allows the lspring 13 to low spring .13 to close valve v11 under all conditions. l Y

Iwould have it understood that with my improved apparatusia free passage from the top space of the diaphragm kcasing 4 to the discharge end 32 is maintained at all 'times bythe adjustable needle valve 35 and the check valve 33. The flow of the water 'is as follows and is Icontinuous. as long as there is water under the slightest pressure: from the space in the casing 4 above the diaphragm 6', through pipe 20 and pipe 34, pastV the needle valve 35 and through pipe 31, past the check valve 33 into the discharge end 32. Y v

If, for any reason, a back pressure exists in Ypipe 32 which would not allow a free discharge as above described, the water `would at once back up in pipe 31 and cause a pressure inthe lower space of the diaphragm casing 4 below the diaphragm 6. Pressure on both sides ofthe diaphragm then being equal, or nearly equal, the spring 13 will promptly close thetrap valve 11.

The best results-are had by opening the `needle valve 35 just sufficiently to conduct away oneehalf of the water which the float i valve 23 can -supply when this valve is open. Naturally, the pressure builds yup in the pipe 2O in the top space ofthe diaphragm casing and continues to build up until the diaphragm is `forced downwardly to open the valve 11. Y* Various slight changes may be made in Athe general form and arrangementof parts described without departing from the invention, and hence I do not limit myself to .the precise details set forth but consider Valterations as fairly fall within the and scope of the appended claims;

.f Iclaim: .K v 1. Atrappof .the character stated, comprising a tank lhavingan inlet thereto an Qoutlet pipe communicating with'the lower yportion of' the. tank, a 4diaphragm casing,

spirit adiaphragm in the casing, a valve in the outlet pipe, av rod connecting the diaphragm .with said valve, a springnormally lholding the valve in closed position, and a float-con- Ymunication with the Ydiaphragm casing.

2. AY trapof theV character stated, comprising atank having an inlet thereto, an `outlet pipe communicating with the lower portion. ofthe tank,l a diaphragm casing, a

diaphragm in thecasing, a valve in the outlet pipe, a rod Vconnecting the diaphragm with said valve, a spring normally holding the valve in closed position, a pipe connecting the lower portion of the" tank with the upper portion of thev diaphragm caslast-mentioned'pipe. Y f Y 3. A trap .of the character stated, comprising a tank having an inlet thereto, an

and a float-operated valve'controlling communication .between the tank and 'said outlet pipe communicating with theV lower Y e lportion of the tank,la diaphragmvcasinga dia lirafrm in the casing` a valve in theout- P .D n

,let pipe, a rod connecting theldiaphragm with saidvalve, a spring normally holding the valve in closedV position, a pipe'connecting the lower portion of the tank with` the upper portion ofi-the diaphragmcasing, an internally screw threaded valveV casing communicating with the last-mentioned pipe, a

screw threaded valve plug in said casing, a valve carriedby the plug and adapted to control communication with saidlast-mentioned pipe, and a float controlling the posi-V tion of the plug. f Y

LA trap of the character stated, com-I prising'a tankrhaving an inlet thereto,;an outlet pipe communicating with the ylower portion of the tank, av diaphragm. casing, a diaphragm in the casing, a lvalve in the outwith said valve,- a spring normally holding the valve :in closed position, a pipe connecting the lower portion of the tank Vwiththe upper portion of the diaphragm casing, an

. control communication with said last-:men-

tioned pipe, radially projecting pins carried'V by the plug, an arm pivotally connectedl to the valvecasing andlextending between .the

Y pins, and a float onthe free end of said arm. Y ,5; A ftrap of'- the character stated,` comprising atank having van inlet thereto, an` Vmyself at liberty to make such changes and outletl pipe communicating with the lower portionv of the tank, a diaphragm casing, a diaphragm in the casing, a valve inthe out.- let pipe, a rod connecting the diaphragm let pipe, a rod'V connecting the diaphragm .p

with'said valve, a spring normally holding the valve in closed position, a pipe connect- Aing the lower portionof the tank with the upper portion of the diaphragm casing, van' f internallyV screwV threadedV valve casingV communicating with the'last-mentioned Vp ipe, ai..

vscrew threaded valve plug in saidl casing, a"

valve carried by the plug and adapted to control communication With Said last-men-V tioned pipe, radially projecting pins carried by the plug, an arm pivotally connected to the valve casing and extending between the pins, and a ioat on the free end of said arm, said valve casing having a screened inlet, and said last-mentioned Valve fully controll'ng communication to the last-mentioned pipe.`

6. A trap of the character stated, comprising a tank, a diaphragm casing, a diaphragm in the casing controlling the Water outlet from the tank, a pressure pipe connecting the tank and casing, a drain pipe from the casing into the tank outlet, a Siphon nozzle on said pipe, ing the pressure and drain pipes, and' a Valve in said last-mentioned pipecontrolling the drain from the pressure pipe and equalizing the back pressure.

HENRY W. J USTUS.

a pipe connect- 

